Plss help, answer with explanation gets brainliest

Geometry. i need step by step explanation on how to do each problem.

Eric has challenged himself to walk 24,000 steps in 4 days. if eric walks the same number of steps each day, which function represents the number of steps eric still needs to walk to reach his goal with respect to the number of days since he started his challenge? a. y = 8,000x − 24,000 b. y = -8,000x + 24,000 c. y = 6,000x − 24,000 d. y = -6,000x + 24,000

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?